Slug-casting machine.



. 'J. s. THOMPSON.

SLUG CASTING MACHINE. v

I APPLICATION FILED APR-23.1917 1,290,805. Patented Jan. 7, 1919.

4 SHEETS-SHEET i.

J. S. THOMPSOPL SLUG CASTING MACHINE. APPLICATION FILED APE.23. I917.

Patented Jan. 7, 1919.

4 SHEETSSHEET 2.

fave/522v 3c I mu J. S. THOMPSON.

SLUG CASTING MACHINE.

APPLICATION FILED mus. 19w

Patented Jan. 7, 1919.

4 SHEETS-SHEET 3.

fizz/ex a??? J. S. THOMPSON.

SLUG CASTING MACHlNE. APPLICAHON FILED APR.23.-!9I7.

4 SHEETS SHEETA. v

5 5; I. 2 W 24 lwiw Patented Jan. 7,1919."

' suitable printing indicia 49.

on the head. The top member 31 is provided with a pair of dowel openings 38 which slip over the dowel pins 39 on the rear member 27 to prevent lateral displacement of this top member. There is thus constructed an open front mold box which is a'anged within this boXside by side to form A thoproper mold face, and within the boxon each side of the line of matrices is inserted a plate 40 having guiding notches 41 and The end piece 301s provided with .a thumb-screw 4L8 bywhich the entire line of-matrices is clamped securely in place, and the top 31 is provided with a downwardly extending flange ll, which fits over the outer edgeof the matrices to prevent any tendency on their part to pull out of. the mold box. Arranged along the front face of the mold box and fitting in the guiding notches all and 4.2 of the side plates 40 are a pair of strips 45 which form the top and bottom of the head mold, the matrices, of course, forming the front of the mold and the projecting portions 46 of the side plates 40 forming the sides of the mold. The strips or rails at their ends dropjnto longitudinally extending slots in side members 47, which are bolted to the head and are, thus held in place.

The operationof molding the slug is as follows: Assuming the parts to be in the position shown in Fig. 1, when the metal pot 2 forced forward the nozzle 5 is forced into engagement with the rear face of the base casting mold 6 and the front face of this mold is forced into engagement with the front. face of the head casting mold, the surface of the mold 6 abutting against the rails and the side. portions 46, thereby mn'ipletely inclosing the sides and top and bottom of the head casting mold. The movement of the member 6 is permissible due to the fact that the frame carrying the base casting mold mounted on the pivoted rods 5. As soon as the parts are thus all fo -cod into compact engagement the metal is forced by the usual pump out of the metal pot, through the nozzle in to the base casting mold and into the head casting mold, where it iini'nediately sets and a slug is formed having base 47 and a head 48, the front face of the head having formed thereon the v As soon as the cw. is made the metal pot is released and Hi ward and the base casting mold vet. Jay from the head casting mold e lliflilfi 'liftfi a plunger 50 operated ..e l spring 2n and on the stationary frame 1. This plunger bears against a cross piece 52 of the frame of the base casting mold and has a constant tendency to force the same away from the head casting mold. As soon as the base casting mold has moved away from the head casting mold, carrying with it the base and the cast herd, it is moved downwardly, and in so 'doing the rear face slides across a stationarily mounted knife edge 53, whereby the base is trimmed and continues in its movement until the opening of the base casting mold is directly opposite the ejector 54. This ejector is horisontally movable and is supported on the wardly, so that it drops out of the base casting mold and into the receiving pan 61 on the frame, after which the ejector 54. is retracted out of the path of the base casting mold and the base casting mold is again raised in position to-repeat the above described operation.

In order that when the ejector operates to push the slug out of the base casting mold the mold will not move, I provide a pair of stationary adjustable butltons 62 for the mold frame when it reaches its lower position, to hold the same against horizontal movement. 7

In Figs. 8, 9 and 10 I have illustrated three forms of cast slugs. It will be noted that the only difference in these forms is the relative location of the base with respect to the head. This is accomplished by'ad justing the supporting screws 32 so that the relative position of the head mold body is vertically changed, whereby the position of the head mold with, respect to thh base mold is changed to vary the relative location of the base on the head.

Having thus described my inventiommhat I claim. as new and desire to secure by Letters Patent,

1. In a type casting machine,"the combination with a base casting mold, of a headcasting mold comprising four separate walls and a, face matrix.

In a type casting machine, the combination with a base casting mold, of a head casting mold comprising a four=walled mold and a matrix forming the face of the head casting mold.

3 In a type casting machine, the combination with a base casting mold, of a head casting mold comprising a four-walled mold and a plurality of matrices forming the face of said head casting mold.

melting pot having a nozzle movable intoinjecting position on said base casting mold.

6. In a type casting machine, the combination with a head casting mold comprising a face mold and a frame forming a mold cavity, of a base casting mold forming with said head casting mold a complete slug mold and reciprocally mounted with respect to said head casting mold, and a horizontally movable ejector cooperating with said base casting mold to eject the slug therefrom when the base casting mold, nd with it the casting, are moved away from the head castingmold.

7. In a type casting machine, the combination with a base casting mold, of a head casting mold comprising a mold body, a plurality of matrices arranged in said mold body to form the front face of the casting mold, a pair of mold sides and a pair of removable railsremovably secured against 1 the front faee of said-matrices to form the teased bottomof the head casting mold.

said matrices between the ears thereof to form the top and bottom of the head casting mold.

9. In a type casting machine, the combination with a base casting mold,-of a stationary supporting head, a head casting mold removably mounted thereon and comprising an open-sided box, a plurality of matrices mounted in said box and forming the-face of said head casting mold, a pair of mold sides and a pair of removable strips placed across the front face of saidn'iatrices to form the top and bottom of said head casting mold,

10. In atype casting machine, the combination with a head casting mold, comprising a mold cavity frame and a plurality of matrices, of a base casting mold cooperating with said head casting mold to form a single slug mold, a horizontally movable melting pot having a nozzle movable-into injecting position with respect to the base casting mold, said base casting mold being horizontally and vertically-movable;

In witness whereof I have hereunto subscribed my name.

JOHN S. THOMPSON. 

